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LOOK. w No. 410,610. Patented Sept. 10. 1889.

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No. 410.610 Patented Sept. 10, 8 ;g%

UNITED STATES PATENT OFFICE.

MICHAEL RIEDINGER, OF CINCINNATI, OI-IIO.

LOCK.

SPECIFICATION forming part of Letters Patent No. 410,610, datedSeptember 10, 1889.-

Application filed April 2, 1888. Serial No. 269,515. (Model) T0 (0% whomit may concern:

Be it known that I, MICHAEL RIEDINGER, a citizen of the United States,and a resident of the city of Cincinnati, in the county of Hamilton andState of Ohio, have invented certain new and useful Improvements inDoor-Locks, of which the following is a specification.

The several features of my invention and the advantages arising fromtheir use, conjointly or otherwise, will be apparent from the followingdescription.

In the accompanying drawings, forming part of this specification, Figure1 is a perspective view of the inside of the lock, the view being takenon that side of the lock which is usually toward the inside of the door.Fig. 2 is an elevation of the interior of the lock, taken on the sameside of the lock as Fig. 1. Fig. 3 is an elevation of the inside coveror face plate of the lock, the bell removed. Fig. e is a diminished viewillustrating the mechanism for ringing the electric bell. Fig. 5 is asection taken at the line 3 y of Fig. 7 ,and looking at the section fromthat position which is on the right-hand side in Fig. 1. Fig. 6 is a topview, partly in section, of the device for ringing the electric bell.Fig. 7 is a section taken at the line :0 50, Fig. 2. Fig. 8 is adetached view in perspective, illustrating the combination-tnmblers and00- operating parts. Fig. 9 shows two different perforated plates,illustrating how the combination may be changed. Fig. 10 is a view ofthe knob-spindles.

The outer casing of the lock is substantially the same as that of theordinary doorlock.

The knob-bolt A terminates within the look in the usual bifurcated end aa, which surrounds the knob-spindle. The ends a a terminate in the lugsa a, against which the cross-arm b of the inside knob-spindle B bears,enabling the bolt to be thrown by the inner knob in whichever directionit is turned. The outer knob-spindle C is journaled on the innerknob-spindle B in any desired way, a convenient means being a stem 0,received in a socket b in the end of the other knob-stem.

The outer knob-spindle C is provided with the cross-arm C, rigidlyattached to it, and which is provided at one end with the lug a,

bearing against the lug a from bolt A, to throw the bolt A, and at theother end with a yoke or holder 0 to hold the combinationplates.

The spring K, which bears against the lockcasing and against lug on thebolt A, serves to throw the bolt A out. This spring K may be coiledabout any lug cast on the face or casin g of the look, but it is mostconveniently attached to the guiding-lug L of the slidebolt L. Thesafety-bolt D is located above the knobbolt A.

A series of tumblers D, all similar in shape and size, are mounted onthe pivot cl, projecting from the side of the bolt D. These tumblers aresupported at their other ends by the bracket E, projecting from the boltD, each tumbler being received in its own socket or slot The spring F isattached to the top of the bolt D and pressed downward 011 the tumblersD. The downward movement of this spring is limited by the pin d. Thespring F serves to keep the tops of the tumblers even.

The tumblers I) terminate in the contracted ends (1 whose upper andlower edges are preferably beveled off slightly, as shown, making asomewhat pointed extremity.

The combination-plates Gr are received in grooves in the yoke 0 Aconvenient means of changing the combination-plates is shown in Fig. 2.A portion M of the top of the casing immediately over the yoke c ishinged and can be readily raised, as indicated in dotted lines, andthrough the opening the combination-plates may be removed and a new oneinserted.

Each combination-plate is provided with two series of openings g-anupper and a lower series. These openings are so located that theopenings of the lower series come opposite the ends (1 of the tumblerswhen the latter are down and the upper end of the arm C is thrownforward by the outside knob, and the upper openings come opposite theends d when the tumblers are in their normal positioni. e., raisedsothat if the tumblers corresponding to the lower openings be allowed todrop by the corresponding keys h on the outside when the outer knob isturned all the ends d will pass into the openings 9, and the door may beopened by the outer knob. If, however, the proper tumblers are notlowered when the outer knob is turned, the solid portion of thecombination-plate will strike against the end 61 of one or more tumblersand throw the bolt D out, looking the door, at the same time that thebolt A is withdrawn.

The preferred means for lowering the tumblers is a series of levers II,one for each tumbler. These levers are all fulcrumed on a short shaft hin the side of the casing and extend entirely through the door, theirends being preferably separated somewhat, as shown, for convenience inmanipulation, and each provided with a finger tip or key It. Within *thelock the levers terminate in upwardlyextending feet k one under eachtumbler. The weight of the keys keeps the tumblers raised.

When desired, a spring 72 may be employed to aid in pressing down itsadjacent key, as shown in Fig. 7 but where the keys are madesufficiently heavy the springs 7L3 may be omitted.

The outer ends of the levers H (the fingertips) are preferably protectedby an overhanging hood H.

The spindle I, operated from the inside of the door, is placedimmediately under the tumblers and carries a fan '4', which, when thespindle is turned, raises the ends of all the tumblers at once to apoint above the line of travel of the combination-plates G. In this waythe combination may be thrown entirely out of gear and the door beopened by the outer knob in the usual way. The bolt D is returned by thearm 0, which bears against the lug d on the inner end of the bolt.

When an attempt is made to open the door by a person unacquainted withthe combination, means are provided for ringing a bell to announce thefact. I have two means of accomplishing this purpose, either or both ofwhich may be employed in the same lock.

In Fig. 2 the device for ringing the gong N is shown in dotted lines. Alug d on the bottom of the bolt D bears against the top of thetriangular dog at. The dog n rests on the plate 02 and one angle ispivoted to the lever n. The other end of the lever n is connected by thelink n with the arm n which latter is rigidly attached to the rock-shaftm The rock-shaft n passes through the casing of the lock and has thecurved clapper-stem n attached to it on the outside. The clapper n restsnearly against the gong N. The spring a tends to depress the lower endof the arm 12 to which it is attached. When the bolt 13 moves forward,the lug d tilts the dog 1?. forward, depresses the upper end, and raisesthe lower end of lever n, raises arm a and moves the bell-hammer awayfrom the bell until the lug d has passed the dog 01.. The bell-hammerthen being released, the spring a will force said hammer against thelatter and ring the latter. Upon the return of the bolt B the lug d willtilt the dog it backward and operate lever n and arm ti, and draw thebell-hammer from the edge of the bell. As soon as the lug dflhas passedthe dog n the hammer will again be forced against the bell and ring thelatter.

The alarm electrically is shown in Figs. 2, 3, 4, and 6.

One wire W of the battery which operates the alarm-bell when the circuitis closed is attached to the plate 0, set in the wall or doorframe. Theother wire W is attached to the switch P. The switch P is hinged at thebottom of the keeper Q, and is provided with an insulated arm 19, whichextends into the keeper Q through an opening q opposite the bolt D. Whenthe bolt D is moved forward, it strikes against the arm pand throws theswitch-lever over to plate 0, thus completing the circuit and causingthe bell to ring. There being nothing to return the armature P when thebolt D returns to place, the bell continues to ring until the armatureis again set by hand.

The mode of operation of the look as a whole is readily understood fromthe modes of operation of the several parts, as already described.

While the various features of my invention are preferably employedtogether, one or more of said features may be employed without theremainder, and, in so far as applicable, one or more of said featuresmay be employed in connection with locks and locking devices other thanthose herein specifically set forth.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a door-lock, the combination of a knob-bolt, an outer knoboperatingindepend- 'ently of the inner knob, an arm attached to the stemof the outer knob and adapted to throw the knob-bolt, thecombination-plate set in the end of the said arm and provided withvariously-placed openings, a series of tumblers in the line of travel ofthe said plate, and means for adjusting the tumblers to the positions ofthe openings in the said plate.

2. In adoor-lock, the combination of aknobbolt, an outer knob operatingindependently of the inner knob, an arm attached to the stem of theouter knob and adapted to throw the knob-bolt, the combination-plate setin the end of the said arm and provided with variously-placed openings,a series of tumblers in the line of travel of the said plate, and meansfor adjusting the tumblers to the positions of the openings in the saidplate, and an auxiliary bolt attached to the tumblers and adapted to bethrown out by them as the knob-bolt is withdrawn.

3. In a door-lock,the combination of a knobbolt, an outer knob operatingindependently of the inner knob, an arm attached to thestem of the outerknob and adapted to throw the knob-bolt, the combination-plate set inthe end of the said arm and provided with V H H K variously-placedopenings, a series of tumblers in the line of travel of the said plate,and means for adjusting the tumblers to the positions of the openings inthe said plate, and an auxiliary bolt attached to the tumblers andadapted .to be thrown out by them as the knob-bolt is Withdrawn, and anelectric switch adapted to be moved by the said auxiliary bolt so as toclose an electric circuit to ring a bell.

4. In a lock, the combination of knob-bolt A, provided with lug a outerknob turning in dependently of the inner knob, arm C, attached to stemof outer knob and provided with lug c, combination-plate G, providedwith openings g and attached to the arm C, bolt D, tumblers D, and meansfor dropping one or more of the tumblers D, substantially as and for thepurposes specified.

5. In alock, the combination of knobbolt A, provided with lug a outerknob turning independently of the inner knob, arm O, at tached to stemof outer knob and provided with lug c, combination-plate G, providedwith openings g and attached to the arm 0, bolt D, tumblers D, andlevers I-I, passing through the door and each upholding one of thetumblers D in the lock, substantially as and for the purposes specified.

6. In a lock, the combination of knob-bolt A, provided with lug a outerknob turning independently of the inner knobf'arm C, attached to stem ofouter knob and provided with lug c, combination-plate G, provided withopenings g and attached to the arm 0, bolt D, tumblers D, levers H,passing through the door and each upholding one of the tumblers D in thelock, spring F, and pin (1, substantially as and for the purposesspecified.

7. In a lock, the combination of knob-bolt A, provided with lug (L2,outer knob turning independently of the inner knob, arm 0, at-

tached to stem of outer knob and provided with lug c, combination-plateG, provided with openings g and attached to the arm 0, bolt D, tumblersD, levers I'I, passing through the door and each upholding one of thetumblers D in the lock, and shaft I, provided with leaf 1'.

S. In a lock, the combination of knob-bolt A, provided with lug (L2,outer knob turning independently of the inner knob, arm 0, attached tostem of outer knob and provided with lug c and yoke 0 combination-plateG, provided with openings g and held in yoke 0 bolt D, tumblers D, andmeans for dropping one or more tumblers D, substantially as and for thepurposes specified.

9. In a lock, the combination of knob-bolt A, provided with lug a, outerknob turning independently of the inner knob, arm 0, attached to stem ofouter knob and provided With lug c, combination-plate G, provided Withopenings 9 and attached to the arm C, bolt D, tumblers D, and means fordropping one or more of the tumblers D, switch-lever P, provided withprojection 19, and Wire WV, and plate 0, having wire attached thereto,substantially as and for the purpose specified.

10. In a lock, the combination of knob-bolt A, provided with lug a outerknob turning independently of the inner knob, arm C, attached to stem ofouter knob and provided With lug c, combination-plate G, provided withopenings 9 and attached to the arm O, bolt D, tumblers D, and means fordropping one or more of the tumblers, lug d on bolt D, lever 01, havingdog at, link n arm H and rock-shaft n rigidly connected to arm n clapperand clapper-spring, and gong, substantially as and for the purposesspecified.

11. In a lock, the combination of knob-bolt A, provided with lug d outerknob turning independently of the inner knob, arm 0, attached to thestem of outer knob and provided with lug c and yoke 0 combinationplateG, provided with openings 9 and held in yoke 0 bolt D, tumblers D, andmeans for dropping one or more tumblers D, and outer casing providedwith hinged portion M near the combination-plate, substantially as andfor the purposes specified.

12. In a lock, the combination of knob-bolt A, provided with lug a outerknob turning independently of the inner knob, and arm 0, attached tostem of outer knob and provided with lug c and yoke 0 substantially asand for the purposes specified.

MICHAEL RIEDIN'GER.

Attest:

WM. E. JoNEs, G. A. W. PAVER.

